This is a particular kind of Argyres-Douglas singularity [1]}, [2]}, [3]}. The low-energy dynamics consists of a non-local, strongly interacting superconformal field theory. The superpotentials (REF ) select, respectively, these two coincidence points breaking \({\cal N}=2\)  down to \({\cal N}=1\) . No condensate is developed, and this means that the theory in the infrared still remains superconformal.The fact that the condensate vanishes in this particular point has also been previously noted in [4]}. Our claim is that in these points there is an interpolation between \({\cal N}=2\)  super-QCD and pure \({\cal N}=1\)  super-QCD. We shall come back at the end of the next section, after the generalization to arbitrary \(n_c,n_f\) , for the discussion and interpretation of this important issue. For the moment, let us keep in mind the lessons that we learn from this example:
